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    Denis J. Mahar, MD

    Cardiovascular Disease

    • (925) 370-5200

    Dr. Mahar's Overview

    Dr. Mahar graduated from the Loyola University Chicago Stritch School of Medicine in 1992. He works in Martinez, CA and specializes in Cardiovascular Disease. Dr. Mahar is affiliated with Contra Costa Regional Medical Center.

    Dr. Mahar's Experience

    Years in Practice: 25

    Dr. Mahar's Specialties

    Cardiovascular Disease

    Dr. Mahar's Education & Training

    Medical School: Loyola University Chicago Stritch School of Medicine; Graduated 1992

    Dr. Mahar's Rating

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    Overall Rating


    • Explains conditions & treatments
    • Takes time to answer my questions
    • Provides follow-up as needed
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    Dr. Mahar's Accepted Insurance

    Please verify insurance information directly with your doctor's office as it may change frequently.

    • Not Available

    Dr. Mahar's Office Information & Appointments

    Office Locations

    Contra Costa Regional Medical Center

    2500 Alhambra Ave
    Martinez, CA 94553
    (925) 370-5200


    Office Hours and Information

    Fax: (925) 646-9130

    Practice Website: Not Available

    Accepting New Patients: Yes

    Medicare Accepted: Yes

    Medicaid Accepted: Yes

    Monday 8:00 AM - 8:30 PM
    Tuesday 8:00 AM - 8:30 PM
    Wednesday 8:00 AM - 8:30 PM
    Thursday 8:00 AM - 8:30 PM
    Friday 8:00 AM - 8:30 PM
    Saturday 8:00 AM - 5:59 PM
    Sunday 12:00 PM - 11:59 PM

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